1970 North Indian Ocean cyclone season

1970 North Indian Ocean cyclone season
Season summary map
Seasonal boundaries
First system formed	May 2, 1970
Last system dissipated	November 29, 1970
Strongest storm
Name	Thirteen
• Maximum winds	185 km/h (115 mph)
• Lowest pressure	960 hPa (mbar)
Seasonal statistics
Depressions	15
Deep depressions	11
Cyclonic storms	7
Severe cyclonic storms	3
Total fatalities	500,805+ (Deadliest tropical cyclone season on record)
Total damage	$86.4 million (1970 USD)
Related articles
1970 Atlantic hurricane season 1970 Pacific hurricane season 1970 Pacific typhoon season
North Indian Ocean tropical cyclone seasons 1968, 1969, 1970, 1971, 1972

The 1970 North Indian Ocean cyclone season had no bounds, but tropical cyclones in the North Indian Ocean tend to form between April and December, with peaks in May and November. The 1970 season saw a total of seven cyclonic storms, of which three developed into severe cyclonic storms. The Bay of Bengal was more active than the Arabian Sea during 1970, with all of the three severe cyclonic storms in the season forming there. Unusually, none of the storms in the Arabian Sea made landfall this year. The most significant storm of the season was the Bhola cyclone, which formed in the Bay of Bengal and hit Bangladesh on November 12. The storm killed at least 500,000, making it the deadliest tropical cyclone in recorded history.^[1] The season was also the deadliest tropical cyclone season globally, with 500,805 fatalities, mostly due to the aforementioned Bhola cyclone.